---
title: Common Questions
description: We've got answers to some common questions!
---

import { Accordions } from 'fumadocs-ui/components/accordion';
import { Accordion } from 'fumadocs-ui/components/accordion';

# Common Questions

We've got answers to some common questions!

<Accordions>
  <Accordion title="What is a Copilot?">
    A Copilot is a trusted partner that lives in your application to help your users get things done.
    There are two main types, the **Concierge** and the **Worker**.

    ### Concierge

    The Concierge Copilot understands your application's capabilities and full user context. It translates 
    high-level user intent into actions by serving as an intelligent intermediary.

    For example, our [Banking Assistant](https://github.com/CopilotKit/demo-banking) implements Concierge Copilots 
    to help users manage their (_fake_) banking needs.
    

    ### Worker

    The Worker Copilot is a domain-specific agent that can help users perform their core work tasks.
    It serves as a partner to the user that is better at performing some tasks and worse at others. 
    Ultimately, it amplifies your users to produce better work than they thought possible. This pattern
    is often used in backoffice copilots.

    Think of the Worker Copilot as Cursor, Replit Agent, or Windsurf, but for any domain. For example, 
    see our [Open Researcher ANA](https://github.com/CopilotKit/open-research-ana).
  </Accordion>
  <Accordion title="What are the main features of CopilotKit?">
    ### Batteries included chat components
    Beautiful, powerful and customizable chat components just an import away.
    | | |
    |---------|-------------|
    | [**Chat**](/reference/components/chat/CopilotChat) | Simple and powerful chat interface |
    | [**Pop-up**](/reference/components/chat/CopilotPopup) | The Chat component in a pop-up format |
    | [**Sidebar**](/reference/components/chat/CopilotSidebar) | The Chat component in a sidebar format |
    | [**Copilot Textarea**](/reference/components/CopilotTextarea) | Powerful AI autocompletion as a drop-in replacement for any textarea |
    | [**Headless**](/guides/custom-look-and-feel/customize-built-in-ui-components) | Full customization of the chat interfaces |

    ### Deeply integrated Copilots
    Give Copilots the ability to execute tools directly in your application.
    |  |  |
    |---------|-------------|
    | [**Copilot Readable State**](/reference/hooks/useCopilotReadable) | Enables Copilots to read and understand the application state |
    | [**Frontend Tools**](/reference/hooks/useFrontendTool) | Copilots can execute tools in the application |
    | [**Generative UI**](/guides/generative-ui) | Render any component in the copilot chat interface |
    | [**AI Autosuggestions**](/reference/hooks/useCopilotChatSuggestions) | AI-powered autosuggestions in your AI chat interface |
    | [**Copilot Tasks**](/reference/classes/CopilotTask) | Let your copilots execute tools proactively based on application state |

    ### Rich agentic experiences
    Integrate your LangGraph agents into your product with ease.
    | |  |
    |---------|-------------|
    | [**Deep support for LangGraph**](/langgraph/quickstart/langgraph) | Bring your LangGraph agents directly into your product |
    | [**Human-in-the-loop**](/langgraph/human-in-the-loop) | Allow your users to work with your agents to solve complex problems |
    | [**Shared state**](/langgraph/shared-state) | Render the state of your LangGraph agents with less than 10 lines of code |
  </Accordion>
  <Accordion title="How does it all work?">
    Great question! CopilotKit has three main components:
    1. **CopilotKit UI**: The UI components that you use to build your Copilots and Agents.
    2. **CopilotKit Runtime**: The runtime that you use to build your Copilots and Agents. This serves as the backend for your Copilots and Agents.
    3. **CopilotKit SDK**: In more complex applications, you'll use the SDK to deeply integrate CopilotKit into your agents.
  </Accordion>

  <Accordion title="Can I use any LLM with CopilotKit?">
    Yes! CopilotKit supports most LLMs, including OpenAI, Anthropic, Google, and more. In addition, you can use any LLM that is supported by LangGraph or
    LangChain.

    For more information, checkout our documentation on [bringing your own LLM](/guides/bring-your-own-llm).
  </Accordion>
</Accordions> 